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api/app/routers/antenna.py

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+from fastapi import APIRouter
+
+from app.models.antenna import AntennaPatternSpec, BeamRequest, BeamResponse, PatternResponse
+from app.routers.errors import as_501
+from app.services import antenna as antenna_service
+
+router = APIRouter()
+
+
+@router.post("/pattern", response_model=PatternResponse)
+def pattern(request: AntennaPatternSpec) -> PatternResponse:
+    return as_501(lambda: antenna_service.normalize_pattern(request))
+
+
+@router.post("/beam", response_model=BeamResponse)
+def beam(request: BeamRequest) -> BeamResponse:
+    return antenna_service.beam_geometry(request)